Centos7部署kubernetes Proxy(七)

1、配置kube-proxy使用LVS(三个节点都装上去)

[root@linux-node1 ssl]# yum install -y ipvsadm ipset conntrack

[root@linux-node2 ssl]# yum install -y ipvsadm ipset conntrack

[root@linux-node3 ssl]# yum install -y ipvsadm ipset conntrack

2、创建kube-proxy证书请求

[root@linux-node1 ssl]# vim kube-proxy-csr.json

{

"CN": "system:kube-proxy",

"hosts": [],

"key": {

"algo": "rsa",

"size": 2048

},

"names": [

{

"C": "CN",

"ST": "BeiJing",

"L": "BeiJing",

"O": "k8s",

"OU": "System"

}

]

}

3、生成证书

[root@linux-node1 ssl]# cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem \

> -ca-key=/opt/kubernetes/ssl/ca-key.pem \

> -config=/opt/kubernetes/ssl/ca-config.json \

> -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

4、分发证书到所有Node节点

[root@linux-node1 ssl]# cp kube-proxy*.pem /opt/kubernetes/ssl/

[root@linux-node1 ssl]# scp kube-proxy*.pem 192.168.43.22:/opt/kubernetes/ssl/

[root@linux-node1 ssl]# scp kube-proxy*.pem 192.168.43.23:/opt/kubernetes/ssl/

5、创建kube-proxy配置文件

[root@linux-node1 ssl]# kubectl config set-cluster kubernetes \

> --certificate-authority=/opt/kubernetes/ssl/ca.pem \

> --embed-certs=true \

> --server=https://192.168.43.21:6443 \

> --kubeconfig=kube-proxy.kubeconfig

Cluster "kubernetes" set.

[root@linux-node1 ssl]# kubectl config set-credentials kube-proxy \

> --client-certificate=/opt/kubernetes/ssl/kube-proxy.pem \

> --client-key=/opt/kubernetes/ssl/kube-proxy-key.pem \

> --embed-certs=true \

> --kubeconfig=kube-proxy.kubeconfig

User "kube-proxy" set.

[root@linux-node1 ssl]# kubectl config set-context default \

> --cluster=kubernetes \

> --user=kube-proxy \

> --kubeconfig=kube-proxy.kubeconfig

Context "default" created.

[root@linux-node1 ssl]# kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

Switched to context "default".

 

6、分发kubeconfig配置文件

[root@linux-node1 ssl]# cp kube-proxy.kubeconfig /opt/kubernetes/cfg/

[root@linux-node1 ssl]# scp kube-proxy.kubeconfig 192.168.43.22:/opt/kubernetes/cfg/

[root@linux-node1 ssl]# scp kube-proxy.kubeconfig 192.168.43.23:/opt/kubernetes/cfg/

7、创建kube-proxy服务配置

[root@linux-node1 ssl]# mkdir /var/lib/kube-proxy

[root@linux-node2 ssl]# mkdir /var/lib/kube-proxy

[root@linux-node3 ssl]# mkdir /var/lib/kube-proxy

[root@linux-node1 ssl]# vim /usr/lib/systemd/system/kube-proxy.service

[Unit]

Description=Kubernetes Kube-Proxy Server

Documentation=https://github.com/GoogleCloudPlatform/kubernetes

After=network.target

[Service]

WorkingDirectory=/var/lib/kube-proxy

ExecStart=/opt/kubernetes/bin/kube-proxy \

--bind-address=192.168.43.21 \

--hostname-override=192.168.43.21 \

--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig \

--masquerade-all \

--feature-gates=SupportIPVSProxyMode=true \

--proxy-mode=ipvs \

--ipvs-min-sync-period=5s \

--ipvs-sync-period=5s \

--ipvs-scheduler=rr \

--logtostderr=true \

--v=2 \

--logtostderr=false \

--log-dir=/opt/kubernetes/log

Restart=on-failure

RestartSec=5

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target

[root@linux-node1 ssl]# scp /usr/lib/systemd/system/kube-proxy.service 192.168.43.22:/usr/lib/systemd/system/kube-proxy.service

[root@linux-node1 ssl]# scp /usr/lib/systemd/system/kube-proxy.service 192.168.43.23:/usr/lib/systemd/system/kube-proxy.service

[root@linux-node2 ssl]# vim /usr/lib/systemd/system/kube-proxy.service

[Unit]

Description=Kubernetes Kube-Proxy Server

Documentation=https://github.com/GoogleCloudPlatform/kubernetes

After=network.target

[Service]

WorkingDirectory=/var/lib/kube-proxy

ExecStart=/opt/kubernetes/bin/kube-proxy \

--bind-address=192.168.43.22 \

--hostname-override=192.168.43.22 \

--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig \

--masquerade-all \

--feature-gates=SupportIPVSProxyMode=true \

--proxy-mode=ipvs \

--ipvs-min-sync-period=5s \

--ipvs-sync-period=5s \

--ipvs-scheduler=rr \

--logtostderr=true \

--v=2 \

--logtostderr=false \

--log-dir=/opt/kubernetes/log

Restart=on-failure

RestartSec=5

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target

[root@linux-node3 ssl]# vim /usr/lib/systemd/system/kube-proxy.service

[Unit]

Description=Kubernetes Kube-Proxy Server

Documentation=https://github.com/GoogleCloudPlatform/kubernetes

After=network.target

[Service]

WorkingDirectory=/var/lib/kube-proxy

ExecStart=/opt/kubernetes/bin/kube-proxy \

--bind-address=192.168.43.23 \

--hostname-override=192.168.43.23 \

--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig \

--masquerade-all \

--feature-gates=SupportIPVSProxyMode=true \

--proxy-mode=ipvs \

--ipvs-min-sync-period=5s \

--ipvs-sync-period=5s \

--ipvs-scheduler=rr \

--logtostderr=true \

--v=2 \

--logtostderr=false \

--log-dir=/opt/kubernetes/log

Restart=on-failure

RestartSec=5

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target

8、启动kubernetes proxy

[root@linux-node2 ssl]# systemctl daemon-reload

[root@linux-node2 ssl]# systemctl enable kube-proxy

[root@linux-node2 ssl]# systemctl start kube-proxy

[root@linux-node3 ssl]# systemctl daemon-reload

[root@linux-node3 ssl]# systemctl enable kube-proxy

[root@linux-node3 ssl]# systemctl start kube-proxy

9、查看服务状态查看kube-proxy服务状态

[root@linux-node2 ssl]# systemctl status kube-proxy

[root@linux-node2 ssl]# ipvsadm -L -n

[root@linux-node3 ssl]# systemctl status kube-proxy

[root@linux-node3 ssl]# ipvsadm -L -n